baber/WOPTO huggingface dataset:
Patent GB-1100381-A (GB)
Title: Manufacture of iron oxides
IPC: G11B5/706
Filed: 1965-01-28
Abstract: Alpha-Fe2O3 is converted to gamma-Fe2O3 by reducing particles of a -Fe2O3 to Fe3O4 and oxidizing the particles of Fe3O4 to g -Fe2O3 at an oxidizing temperature from 550 DEG  to 700 DEG  F., the reduction and oxidation being effected by gaseous agents under conditions such that the particles are fluidized by the gaseous agents. The a -Fe2O3 particles may be from 60-120 mesh (U.S. Standard) and be fluidized by a stream of gaseous agent having a velocity from 0.122 to 0.5 ft./sec., the depth to width ratio of the fluidized bed being greater than 1:1. In a preferred embodiment the a -Fe2O3 is first formed by dehydration of the particles of a -Fe2O3.H2O by hot air, e.g. at 600 DEG -800 DEG F. under conditions such that the particles are fluidized, the reducing gas is a mixture of nitrogen and hydrogen in a ratio of from 3:1 to 1:3 by volume and the oxidizing gas is air which is introduced into the fluidizing nitrogen stream at a rate to maintain the desired oxidation temperature.  A fluidized bed reactor is described which comprises a vertical closed cylinder which may be heated by horizontal external strip heaters and cooled by a cooling coil which passes around the outside of the heaters.  Nitrogen, hydrogen and air are supplied as required through a heated conduit and pass through a sintered stainless steel gas dispersion plate at the bottom of the cylinder.
Patent GB-1376844-A (GB)
Title: Colour picture tube beam convergence apparatus
IPC: H01J29/70
Filed: 1972-01-27
Abstract: 1376844 Colour television tubes RCA CORPORATION 27 Jan 1972 [3 Feb 1971] 3816/72 Heading H1D A beam convergence device for a colour television tube using three co-planar beams comprises a pair of permanent magnet structures mounted on opposite sides of the neck of the tube, each being capable of producing a field of variable strength and direction and influencing a respective one of the outer beams. Fig. 4, shows an exploded view of one of the magnetic structures comprising a pair of diametrically magnetized ceramic discs 34 and 35 of low permeability mounted within respective retaining collars 32 and 33 on a spindle 31 which extends into a mounting plate 26a; rotation of one disc varies the field strength and rotation of both varies the direction of the field. Two mounting plates are clamped together round the neck of the tube by spring clips with their associated magnetic structures lying in the same plane as the beams.
Patent GB-927461-A (GB)
Title: Improvements relating to electrical connections
Inventor: ROGERSON LESLIE CHARLES
IPC: H01R4/50
Filed: 1961-02-01
Abstract: 927,461. Binding posts; direct connection between conductors. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 18, 1962 [Feb. 1, 1961], No. 3820/61. Class 38 (1). An electrical connection comprises two or more connection elements 1, 2, 4 which are free at one end and tapered towards that end and a nut 3 of harder material which is screwed on to bind the elements together. The contact surfaces of the connection elements and the nut may be tinned. The inner element or elements if any may be wider than the outer elements. Rows of adjacent terminal strips may be connected by means of U-shaped links, with a connection according to the invention at each end of the U (Fig. 3, not shown). The elements may be located by lugs 1a, 2a or by a step in an inner connection element (Fig. 3, not shown). The connection elements are preferably flat.
Patent GB-229650-A (GB)
Title: Improvements in feeder grates
IPC: F23H7/06
Filed: 1925-02-11
Abstract: 229,650. Franke, R. M. H. Feb. 23, 1924, [Convention date]. Fire-bars and grates; fire-bridges; fuel, supplying.-A mechanical grate is composed of transverse bars, adjacent groups of which are oscillated in opposite directions. The individual bars, .curved in a forward direction, lie over each other and are independently pivoted at their lower edges between supports d carried by brackets c on V- section cross beams a forming covers for and capable of oscillation on knife edges b. The bars have edges g which project into the fuel bed and nozzle-like air passages h. Alternate groups are coupled together and their oscillation effected by linkage such as shown, provision preferably being made for varying the relative amplitudes and characters of the oscillation in the different groups. The grate may be horizontal, but is preferably inclined, as a whole, at an angle less than the angle of repose of the fuel, this angle being exceeded by the bar-groups when in their " steep " position. Projections t, Fig. 5, on the backs of the bars may be provided to catch and consume fuel passing between the bars. At its lower end the grate may terminate with a downwardly-directed fire-bridge comprising rollers aa mounted on a water-cooled tube and rotated by ratchet gearing bb. The residues are consumed on an oscillating grate, u provided with a reciprocating feed x, v and adjustably supported at its other end so that the gap (beneath the firebridge) through which the final residues are delivered, can be adjusted automatically or by hand. Where the furnace is applied to a locomotive, as shown in Fig. 5, the fuel is fed to the grate upwardly through a closed conduit r. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the reduction of the number of bars in a group to one. This subject-matter does not appear in the Specification as accepted.
Patent GB-705276-A (GB)
Title: An improved toy boxing ring
IPC: A63H13/06
Filed: 1951-02-16
Abstract: 705,276. Mechanical toys. BILLER, H. Feb. 16, 1951 '[June 29, 1950], No. 3849/51. Class 132(3) A toy boxing ring comprises two rigid figures b, c, each with pivoted arms f and one foot drawn back behind the other, and each mounted to swing about an axis located at its retracted foot. Mounted on a casing a are corner posts e carrying thin rubber cords d. Each figure is pivoted at h and secured to a lever i, the free ends of the levers being supported by a spring k engaging a tappet wheel m rotated by clockwork. Thus, as the wheel rotates the figures move back and forwards. Preferably the teeth of the tappet wheel are irregular.
Patent GB-529234-A (GB)
Title: Improvements in methods of igniting direct current high voltage electric arcs
IPC: H02M7/04
Filed: 1939-02-06
Abstract: 529,234. Control systems for arcs. I. G. FARBENINDUSTRIE AKT.-GES. Feb. 6, 1939, No. 3881. Convention date, Feb. 8, 1938. [Class 38 (iv)] An electric arc, for example, for treating hydrocarbons is ignited by causing a shortcircuit and controlling the rectifier feeding the arc so that the current is increased to a point at which, when the short-circuit is removed, the arc will be ignited, the rate of current increase being such that the regulator of the generator can keep the voltage constant. The opening and closing of the short-circuit may be effected by a relay independence upon the arc current and the regulation of the rectifier may be automatic.
Patent GB-214032-A (GB)
Title: Improvements in wringer driving gear in combined washing and wringing machines
IPC: D06F37/36
Filed: 1923-02-09
Abstract: 214,032. Summerscales, J. B., and Summerscales, W. H. G. Feb. 9, 1923. Folding wringers, driving-gear for; washing- machines with swinging beaters in stationary receptacles.-In a combined washing and wring- ing machine having a manually operated clutch for putting into operation either the washer or the wringer or both at will and a pedal operated switch for causing the electric driving motor to rotate the driving shaft in opposite directions at will, the wringer driving gear is so arranged that the whole of the wringer element may be folded down without interfering with the drive. Shaft 17, Fig. 1, driven from the motor shaft 24 and shaft 13, carries a crank 27 for swinging the beater shaft 32 and is connected with a shaft 5 by chain and sprocket gearing 18, 19, 20, Fig. 4. The shaft 5 constitutes a pivot pin for the whole of the wringer element, so that the latter may be swung from the vertical position to the dotted horizontal position, Fig. 3, without disconnecting the drive. The lower roller shaft 8<a> is rotated from the shaft 5 bv the chain 6. The crank 27 and the wringer driving sprocket wheel 18 are clutchable with the shaft 17 by means of independent manually operated clutches 40, 41 and 16<b>, 16<c> respectively, Fig. 4, the elements 40, 16<b> being slidable on the shaft 17. The means for controlling the direction of rotation of the driving shaft 24 comprise a pedal 35 pivoted at 37 and adapted to rock a beam 34, Fig. 4, carrying a shaft on which a commutator is arranged, a second pedal, not shown, being provided to restore the beam and commutator whilst a spring- pressed pawl 39 retains the beam in the desired position.
Patent GB-233446-A (GB)
Title: A composition of matter and method of producing the same
IPC: C04B28/02
Filed: 1924-02-14
Abstract: 233,446. Marvle Products, Ltd., and Svandalsflona, A. N. Feb. 14, 1924. Compound or composite blocks, slabs, and tiles. -Imitation marble, tiles, slabs and like articles are made by applying a thin coating of a mixture of cement, dissolved casein and water, with or without colouring matter, to a smooth, polished or other moulding surface and adding thereto a layer of similar materials mixed with sand or other filling materials. The second layer may be differently coloured and may be applied so as to displace the first coating and show through or between the displaced materials. A further layer may contain, in addition, ballast, stone, chips and the like. Designs or patterns may be produced as required. The surface may be treated with a waterproofing composition.
Patent GB-1126654-A (GB)
Title: Mixing method and mixing trough construction
Inventor: FUTTY ROBERT C
IPC: B28C5/08
Filed: 1966-01-28
Abstract: 1,126,654. Mixing troughs. IRL DAFFIN ASSOCIATES Inc. 28 Jan., 1966 [17 Feb., 1965], No. 3936/66. Heading B1C. A mixing trough (suitable for concrete) comprises rigid side walls 22, end walls 18, 20 with a flexible base 28 of elastomeric material, therebeing a rotatable shaft (36) carrying at the inlet end of the trough a pair of helical screw sections 40 with a blade 42 therebetween, a plurality of radial mixing paddles 44, an arcuate scraper blade 46 and a spiral screw 48 to convey the material towards an outlet opening 34. The trough has a pivot in the inlet end wall 20 about which the trough is raised through an acute angle by a cable and winch.
Patent GB-1491375-A (GB)
Title: Process for the preparation of bromine and/or hydrogen bromide from ammonium bromide
IPC: C01B7/09
Filed: 1975-01-30
Abstract: 1491375 Bromide and/or hydrogen bromide HOECHST AG 30 Jan 1975 [30 Jan 1974] 4090/75 Heading ClA Bromine and/or hydrogen bromide are prepared by reacting ammonium bromide with O 2  or a gas containing free oxygen at 200-800 C. in the presence of a multivalent metal, or compound thereof or elemental carbon as a catalyst. The catalyst preferably is selected from Cu, Va, Tl, rare earth metals or metals of Groups VIa, VIIa, and VIII of the Mendeleef Periodic Table. Bromine or hydrogen bromide alone may be selectively formed depending on the catalyst selected for the reaction. Multivalent metal compounds usable as catalysts can comprise, e.g. oxides, mixed oxides, hydroxides, salts of the metals with inorganic acids, such as bromides, sulphates, phosphates, nitrates, carbonates, or borates, salts of heteropolyacids, organometallic compounds and salts of organic acids.
Patent GB-113352-A (GB)
Title: Improvements relating to Glazing Bars and the like.
Inventor: HOPE HENRY DONALD
IPC: E04D3/08
Filed: 1917-03-21
Abstract: 113,352. Hope, H. D. March 21, 1917. Roofing.-A ridge-cap c<2> and packing c<2> in one piece are provided to overlap the edgesof glazing panes a<6>.
Patent GB-564270-A (GB)
Title: Improvements in and relating to the inversion of sugar liquers
IPC: C13K3/00
Filed: 1943-03-15
Abstract: Sugar liquors are inverted by passage through granular material, such as bauxite, alumina, silica gel or bone charcoal, on which is adsorbed invertase.  The granular material, e.g. bone charcoal, may act also as a decolourising agent and inversion may be carried on after it has lost its decolourising property or the liquor may be passed through decolourising material before or after inversion.  If the process be interrupted, the over-inverted liquor produced in the inversion chamber may be blended with uninverted liquor and then decolourised with or without further inversion.  The production of over-inverted liquor during stoppages may be reduced by the use of a bed of granular material of which only the lower portion is impregnated with invertase or by increasing the specific gravity of the liquor before the stoppage.  The granular material may be impregnated uniformly by simultaneously filling the inversion chamber with the material and invertase solution, thereby providing maximum activity of the invertase used.  The invertase solution may be prepared by the autolysis of yeast in the presence of toluene and filtration, as by means of a plate and frame press, with a filter aid consisting of a cream of sulphate of lime crystals formed by stirring plaster of Paris with warm water.  The mixture may be treated with acetic acid at about pH 4.7 to precipitate proteins before filtration.ALSO:Sugar liquors are inverted by passage through granular material, such as bauxite, alumina, silica gel or bone charcoal, on which is adsorbed invertase.  The granular material, e.g. bone charcoal, may act also as a decolourising agent and inversion may be carried on after it has lost its decolourising property or the liquor may be passed through decolourising material before or after inversion.  If the process be interrupted, the over-inverted liquor produced in the inversion chamber may be blended with uninverted liquor and then decolourised with or without further inversion.  The production of over-inverted liquor during stoppages may be reduced by the use of a bed of granular material, of which only the lower portion is impregnated with invertase or by increasing the specific gravity of the liquor before the stoppage.  The granular material may be impregnated uniformly by simultaneously filling the inversion chamber with the material and invertase solution, thereby providing maximum activity of the invertase used.  The invertase solution may be prepared by the autolysis of yeast in the presence of toluene and filtration, as by means of a plate and frame press, with a filter aid consisting of a cream of sulphate of lime crystals formed by stirring plaster of Paris with warm water.  The mixture may be treated with acetic acid at about pH 4.7 to precipitate proteins before filtration.
Patent GB-565404-A (GB)
Title: Improvements in and relating to mounting means for dops or holders for diamonds or other stones or hard tool metals
IPC: B24B41/06
Filed: 1943-09-09
Abstract: 565,404. Grinding or polishing diamonds &c. JEARUM, F. C. Sept. 9, 1943, No. 4283. [Class 60] Means for mounting holders for diamonds or other stones, or hand tool metals, for generating forms thereon by oscillation in a plane normal to the cutting disc, as in Specification 565,399, comprises a pair of beds located at an angle which is bisected by the central plane of the mounting means to which the oscillating motion is imparted, the arrangement being such that when one corner of the stone, positioned on one bed, has been rounded &c., the stone is transferred to the other bed for rounding the other. Fig. 4 shows a wedge-shaped stone &c. 10 mounted in a recess in a holder 11, the corners 10a, 11a of the stone being rounded by mounting the holder on the beds 1a, 1b, Fig. 2, in succession, the beds being formed on the sides of the right-angled member 1. The holder is held between ledges 1c, 1d and a clamp 2b, the holders being adjusted by screws 3 furnished with shoulders 3a. The member 1 is fitted with a clamp 1g embracing a sleeve 4 axially adjustable along a bored member 5 by means of screws 5b. The member 5 is supported by a vertical slider 7'mounted on a post 8a projecting from a base 9 provided on its underside with flanges to fit a feed on the radial arm of the oscillating device.
Patent GB-1138604-A (GB)
Title: Electromagnetic devices
Inventor: PADDISON ERIC
IPC: D03D25/00
Filed: 1965-02-01
Abstract: 1,138,604. Electromagnets; electromagnetic relays; electric transformers. ENGLISH ELECTRIC CO. Ltd. 28 Jan., 1966 [1 Feb., 1965], No. 4287/65. Headings H1N, H1P and HIT. An electromagnetic device such as a transactor used in a protective relay comprises a magnetic core 10 carrying a winding 8 and having mutually spaced opposing surfaces of polepieces 11, 12 which assume opposite polarities when energized, and an elongate magnetic member 13 movable along its major axis and mounted between the polepieces so as to define therewith two air gaps one on each side of the axis, and the opposing surfaces of the member and of the polepieces have mutually the same shape and angle of taper and the movement of the member is so limited that whereas the air gap lengths vary in response to movement of the member whereby to vary the magnetic circuit reluctance such lengths are constant over the whole opposing surface areas of the polepieces for any given position of the member. The member and air gaps may be of rectangular or part annular cross-section, and as shown the member is threaded on an adjustable mounting screw 14, has limiting non-magnetic stops 17, 18, and is coupled to a spring loaded pointer 20 movable around a scale 21 which may be calibrated to exhibit the inductance of the device.
Patent GB-1177274-A (GB)
Title: A Conveying Apparatus
Inventor: KAMMANN AUGUST WILHELM WILFRED
IPC: B65G17/12
Filed: 1967-01-28
Abstract: 1,177,274. Endless conveyers. W. KAMMANN, [trading as WERNER KAMMANN]. 28 Jan., 1967, No. 4346/67. Heading B8A. In an endless chain bucket conveyer for conveying articles in a varnish coating machine, the connections between each end of each bucket 13 and the respective endless chains 11,12 and the chains 11,12 themselves are offset in order to maintain the buckets in a constant orientation. At feed and discharge points, where it is desired to tilt the buckets, the chains 11, 12 are brought out of offset relation by mounting the chain wheels 22, 23 on the same axis.
Patent GB-305677-A (GB)
Title: Artificial limbs
IPC: A61F2/58
Filed: 1929-02-09
Abstract: 305,677. Livingston, J. Feb. 10, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Limbs, artificial.-An artificial limb comprises a wrist 3 and a hand 22. having co-operating spheroidal socket members 18, 24 to allow the hand to pivot in various directions in relation to the wrist, locking means comprising two pins 35 entering holes on the members 18, 24 to allow locking in various positions and released by a press button 38 being provided. A pin on one of the spheroidal members enters a polygonal aperture on the other to limit the pivotal motion of the hand. Fingers having two joints 50, 51 are pivoted to the hand and are opened by tension on chains 72 which pull forward rock-bars 60 connected at one end to links 61 pivoted to the hand and to the end joints 51. Tension on the chains 72 is caused by certain movements of the arm. The fingers are held open by a ratchet 66 engaging a plate 68. The fingers close when the tension on the chains 72 is released, under the influence of springs 70, and are locked by springs pressing the ratchets 66 into engagement with the plate 68. The third and fourth fingers may be connected so as to move together.
Patent GB-1010040-A (GB)
Title: Improvements in or relating to circuit arrangements for stabilizing high direct voltages
IPC: G05F1/563
Filed: 1964-02-03
Abstract: 1,010,040. Automatic voltage regulation. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Feb. 3, 1964 [Feb. 6, 1963], No. 4461/64. Headings G3R and G3X. A voltage regulator comprises input terminals 2, 0, output terminals 22, 20, a series n.p.n. transistor 1 the base voltage of which is controlled in accordance with input and/or output voltage variations, and an electrode tube 3 having its anode connected to terminal 2, its cathode connected to the collector of transistor 1, and its control grid connected to the emitter of transistor 1. As shown, the circuit for sensing the output voltage and for controlling transistor 1 includes a voltage divider 18, 19, 21, a double triode 6, 7, and a further transistor 4. Supplementary voltage sources 11 and 15, associated with stabilizing gas-discharge tubes 8, 13, 17 provide operating voltages for the tubes 3, 6, 7. It is stated that the provision of the tube 3 results in the arrangement having a high stabilization factor with a loop amplification of about unity; moreover the greater part of the voltage drop across the series element is set up across the tube, allowing the transistor 1 to operate under favourable conditions. Specifications 751,679 and 752, 031 are referred to.
Patent GB-594895-A (GB)
Title: Improvements in or relating to high-frequency diathermy-apparatus
IPC: A61N1/40
Filed: 1945-02-22
Abstract: 594,895. Electro-medical apparatus. OFFNER, M. Feb. 22, 1945, No. 4477. Convention date, March 6, 1944. [Class 81 (ii)] Apparatus for medical treatment by highfrequency electrical currents comprises an output lead terminating in an electrode wherein the electrical length of the lead is equal to half the wavelength of the oscillatory current supplied to the lead or a multiple of said half wavelength, and the electrode is located at a potential antinode. Fig. 1 shows an oscillatory circuit comprising a tuning condenser 2, a coil 1, coupled to the generator circuit and open branches 4, 4<1> in the form of flexible cords or rigid metal.arms, carrying electrodes 5, 5<1> and of electrical length 6, 6<1> as indicated above. One of the branches may be suppressed. The second branch may be a lead connected to a bed, or the second termination may be connected to another patient. The electrical length of branches 4, 41 may be altered by the insertion of inductance coils or condensers. In Fig. 2, the generator coupling coil 7 is shared by the closed circuit and the " aerial," so that the electrical length 11 is a half wavelength. Another embodiment is shown in which the output lead is a doublet aerial comprising a coil and two output electrode terminations, the aerial being supplied by a single or double wire feeder line of high or low impedance. The arrangement of Fig. 6 enables radiation to be directed to a given part of the patient's body employing a reflector 19 and absorber 20 located respectively behind and in front of the aerial and being unconnected with the feeder line 17. In a modification, a closed circuit arrangement is provided comprising a plurality of units connected in series, each unit consisting of a condenser and inductance in series and having the specified electrical length. The output lead as a whole may be looped around the body. The various apparatus may be employed with the generator described in Specification 4475/45, and with the gas discharge electrodes described in Specification 595,151, both Specifications as open to inspection under Sect. 91.